BNC 630 - Manual (Page 9)

4
2.0 Hooking up the 630
This section discusses how to properly connect the 630 to your equipment. The following diagrams identify the connectors and
show typical hookups.
Position
Value
*
FSK
∅ M
SSB
Burst
AM
DTMF Gen
Power
Measure
Sweep
FM
DTMF Det
#
MHz
dBm
KHz
Vp-p
Sec
Hz
MV p-p
mS
Other
Clear
One Touch
Mode Selection
Field
Digit Field
Remote
SYNC
Out
SIG
Out
.
з з
1
Trigger
9 8 7
6
0
5
2 3
-
Offset
Recall
Store
и и
к к
й й
Sinewave
Function
Arbitrary
Pulse
Ш Ш Ч Ч
Mode
4
Figure 2.0-1: Front Panel Connectors
Each connector on the front and the back of the 630 is discussed here.
1.
SYNC Out connector
This connector provides a digital signal which swings between 0V and +5V providing a logic level output useful for driving digital
circuitry. This output is capable of driving TTL or CMOS loads. Its output current capability is +/- 24 mA.
In all sinewave and modulation modes except sweep, this connector supplies a squarewave version of the signal on the SIG Out
connector. It has a fixed 50% duty cycle.
In the Sweep mode, this connector provides a high going pulse at the beginning of each sweep.
In the Arbitrary Waveform Generator mode, the user may set this output high or low on any data point(s) in the Arbitrary
Waveform. This feature may be used to create a pattern of logic pulses or a triggering or synchronizing signal which accompanies
an analog waveform.
In the Function Generator mode, a high going pulse is given on this output at the start of each function waveform. This useful
feature allows the user to synchronize the functions to other events.
In the Pulse Generator mode, this output follows the SIG Out signal. The signal on this output has the same frequency and duty
cycle as signal on the SIG out connector. However the signal on this connector is not variable in amplitude and offset; it always
swings from 0V to +5V, and provides a convenient interface with digital logic.
2.
SIG Out connector
This is the main signal output. It has a source impedance of 50 ohms, and can supply signals as large as 20.000 Vp-p into an open
circuit (or 10.000 Vp-p into a 50 ohm load). It can also supply a DC offset voltage of +/- 12.000 V into an open circuit (or +/-
6.000V into a 50 ohm load).
*** Caution ***
Although the output is protected against short circuits, you should NEVER connect SIG Out to a voltage or signal source. This
may overload the output and damage the 630.